Question: A quality analyst wants to construct a sample mean chart for controlling a packaging process. Each day last week, she randomly selected four packages and

A quality analyst wants to construct a sample mean chart for controlling a packaging process. Each day last week, she randomly selected four packages and weighed each. The data from that activity representing the weight in ounces appear below.

Day Package 1 Package 2 Package 3 Package 4

Monday 23 22 23 22

Tuesday 22 22 20 21

Wednesday 21 22 22 22

Thursday 22 21 20 22

Friday 20 21 22 20

Is the process in control considering +/- 2 sigma for variations due to natural causes?

The process is both in control and capable.

The process is in control but not capable.

There is insufficient information to make a decision.

Yes, the process is in control.

No, the process is not in control.

q2) A quality analyst wants to construct a sample mean chart for controlling a packaging process. Each day last week, she randomly selected four packages and weighed each. The data from that activity representing the weight in ounces appear below.

Day Package 1 Package 2 Package 3 Package 4

Monday 23 22 23 22

Tuesday 22 22 20 21

Wednesday 21 22 22 22

Thursday 22 21 20 22

Friday 20 21 22 20

Is the process in control considering +/- 2 sigma for variations due to natural causes?

The process is both in control and capable.

The process is in control but not capable.

There is insufficient information to make a decision.

Yes, the process is in control.

No, the process is not in control.

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